| 摘要 |
<p>A graft copolymer obtained by polymerizing 0.5 to 10 parts of a vinyl monomer component comprising 100 to 50 % of a polyfunctional monomer having two or more polymerizable unsaturated bonds in the presence of 40 to 90 parts of polyorganosiloxane particles and then polymerizing 5 to 50 parts of a vinyl monomer in the resulting system; a graft copolymer obtained by polymerizing 0 to 10 parts of a vinyl monomer component comprising 100 to 50 wt % of a polyfunctional monomer having two or more polymerizable unsaturated bonds in the presence of 30 to 95 parts of a polyorganosiloxane latex obtained by seed polymerization wherein a hydrophilic and organosiloxane -swellable polymer is used as the seed and then polymerizing 5 to 70 parts of a vinyl monomer in the resulting system; flame retardants consisting of the graft copolymers; and resin compositions comprising thermoplastic resins and the graft copolymers.</p> |
